>> and after a series of technical failures, the faa announced it is investigating boeing's biggest bet. its dream liner 787. the dream liner is boeing's latest jet. news of the probes sent the stock price down sharply 2.5%. outfront tonight, sandra endo with a look at what has gone so wrong. >> boeing's dreamliner was for years just that. a plane made of plastic, a fuel sipper with huge windows, big seats, the plane of the future. >> it was supposed to be, you know, the best thing since sliced bread. >> but a totally new plane run almost entirely by electronics didn't just push the limits and change aviation, it created a whole new learning curve for the industry. the dreamliner was delayed and struggled from day one. the first dreamliner delivered in 2011 was three years behind schedule. the 787's maiden flight was touted in 2007. but after four years of troubling delays, its first flight finally took off on an overcast day in seattle. at first, airlines fell in love. 57 companies ordered the dreamliner at a cost of more than $200 million each. but the plane is struggling, just this w